Should i use font in EM or PX with ionic


I am currently developing an application with Ionic. I use for this, a model of the application to do the same, with colors, fonts (in px), image, etc …

My question is, should I use the EM or PX unit for the font ?

I ask myself this question because for me the unit EM is supposed to be more adapted to all types of screen. However, the fonts transmitted with the models are in PX and therefore more complicated to make a model identical with the EM unit.

I would just like to know if the EM unit is really useful or not, using Ionic. :slight_smile:

Thanks for your help